Heinrich raab



H. RAAB.

SHOE MAOHINERY.

APPLICATION FILED 11111.21, 1913.

1,105,834. Patented Aug. 4, 1914.

THE NORRS PETERS C01. PHOTO-LITHO. WASHINGTON, D4 C 'UNH :annuncia: lanen, or rrniuasn'ns, GERMANY.

SHOE MACHINERY.

Specification of Letters Patent. Patented Aug, 4, 1914;

`Applicationfiled January 27, 1913. Serial No. 744,462.

the soles of iboots or shoes in any desired manner by the employment of correspondn ing polishing and decorating tools.`

The object of the invention is to provide an improved machine of the above character which shall be simple in construction and efficient in operation.

The invention is illustrated in the accompanying drawing of whichi Figure l isa view infront elevation, of the interior of a preferred form of machine embodying the invention, Fig. 2 being `a sectional view on the line A`A `of Fig. l.

Referring now `to the drawing a tool holder or clampis indicated at mv as rigidly secured to a shaft `71: by means of :arm l` which is adapted to be rocked or oscillated about the axis ofthe shaft 7c. In order to effect such rocking or oscillating movement a prismatic cam member or `disk Z is provided having diametrically opposite to each projecting portion a portion of smaller radius and being mounted for rotation within the cast-iron casing a of the machine which is provided with a cover o Secured by bolts c. The disk Z is preferably in cross section, a regular polygon having an odd number of sides, .for instance seven, and the periphery of the disk is adapted to engage with rollers f which are pivotallymounted at the extremities of a pair of arms or levers g. The other extremities of the arms g are pivoted at h upon a rocker e', a hole in which fits on to a `co-ned surface on the shaft 7c and is secured in position by means of a nut, so that the members z', le, Z and fm are rigidly secured together'. In order to cause the rocking movement of the shaft 7c the prismatic disk Z which is mounted upon a shaft q is `arranged to be rotated by means of a belt pulley e. The rotating rollers f follow the external periphery of the disk cl thereby correspondingly` `moving the arms g. The

rocker stud s adapted to engage resiliently with the arms g` by means of s )rings 1 interposed between the arms g and the arms of the rocker lVhen it is desired to stop the ma-A chine a spring-controlled pin p which normally engages with a groove o on the shaft t, is withdrawn and the shaft 7c with the parts secured thereto is moved forward by means of a handle located -on the arm Z` until the pin 17 snaps `into position within another groove a. As shown in the drawings, the rocker/i is recessed to receive the pivoted ends of the arms, thereby providing sufficient play for enabling the necessary movement. lVhcn the shaft c with the rocker and the arms g is shifted into inoperative position, the arms g rest upon `the front edges of the walls of the recesses, and are thereby prevented from contactine' with the front part of the diskI cl, which is circular and is of smaller diameter than the polygonal part thereof.

Various modifications of the mechanism above described may evidently be adopted without exceeding the scope of the invention.

Having now described my invention what I claim and desire to secure by Letters Patent of the United States is:

l. In a machine `for polishing or decorating the edges of shoe soles,a shaft, a tool holder mounted on said shaft, a rocker fixed to said shaft, a rotatable cam member, levers pivotally connected to the rocker project-ing parts on said levers, and means for holding said projecting ,parts of thc levers in engagementwith the periphery of said cam member and for transmitting the mo-` tion of the levers to the rocker, said. cam member having opposite to each projecting part a part of smaller radius.

2. In a machine for polishingor decorating the edges of shoe soles, the combination of a shaft, a tool holder mounted on said shaft, a rocker fixed to said shaft, twolevers pivotally connected to said rocker, rollers journaled to the ends of said levers, a rotatable disk, and means for holding said rollers in engagement with the periphery of said disk and for transmitting the motion of said levers to said rocker, said diskbeingin the form of a regular polygon with anodd :number of sides.

3. In amachine for polishing `or decorati t is provided with `two arms or extensions each of which 1s vprovided with `a `.ing the edges of shoesoles, thevcombination of a shaftpa toolholder mounted on seid shaft, a rocker fixedto said shaft, projections on said rocker, e rotatable disk, levers pivotallyconnected to the rocker projecting parts connected with said levers and engagVv ing the peripheryof the dislnfsaid disk being in the form of a regular polygon with v nin odd number of sides, and springs inter- `posed between saidprojections of said rocker vlevers pivotallywconnected to seid rocker,

rollers journziled to the ends of said levers, springs interposed between sind levers and the rocker for holding said rollers in `en-` gagement. withl the vcam member, said cam member having the shapeiof et regular polygon with an odd number of sides and seid v shaft being'movable with''the vtoolholder,

`the rocker and levers fixed thereto longitu` dinally of its axis, said shaftvhaving two spaced annular grooves therein, and a spring controlled pin carried by the machine kCas-v` ing and adapted to engage one of said grooves to holdthe shaft with the levers fixed thereto inoperative position relative 4to said cam andbeing adapted `to engage my hand' in presence of two subscribing' witnesses.

HEINRICH .Ri/MIB.` W'itnesses: f' HERMANN LENRU'rT,

MICHAEL ZIMMERMANN.

Copies of thisk petent'zrigybe obtainedrforvve. eents ealch,A addressing che Commissioner of Patents,

'l Washington, D.` C. 

